curl --request POST \
  --url https://nini.monieswitch.com/wallet/upgrade \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "walletId": "488c5bf0-1bb1-404d-a1b9-f638d0e7795e",
  "tier": 3,
  "nin": 848434884848,
  "city": "Lagos",
  "state": "Lagos",
  "country": "Nigeria",
  "address": "No 2, Greenwood Estate",
  "proofOfAddress": "file-upload.png"
}'

{
  "status": true,
  "message": "Your upgrade request has been sent."
}